

<!DOCTYPE html>
<html lang="zh-CN" data-default-color-scheme=&#34;auto&#34;>



<head>
  <meta charset="UTF-8">
  <link rel="apple-touch-icon" sizes="76x76" href="/hexo/img/favicon.png">
  <link rel="icon" type="image/png" href="/hexo/img/favicon.png">
  <meta name="viewport"
        content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  
    <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
  
  <meta name="theme-color" content="#2f4154">
  <meta name="description" content="用来存放一些些个人笔记，以方便查阅">
  <meta name="author" content="AiEson">
  <meta name="keywords" content="">
  <title>MathTest - 某垃圾高中生的个人笔记站</title>

  <link  rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.4.1/css/bootstrap.min.css" />


  <link  rel="stylesheet" href="https://cdn.staticfile.org/github-markdown-css/4.0.0/github-markdown.min.css" />
  <link  rel="stylesheet" href="/hexo/lib/hint/hint.min.css" />

  
    
    
      
      <link  rel="stylesheet" href="https://cdn.staticfile.org/highlight.js/10.0.0/styles/github-gist.min.css" />
    
  

  
    <link  rel="stylesheet" href="https://cdn.staticfile.org/fancybox/3.5.7/jquery.fancybox.min.css" />
  



<!-- 主题依赖的图标库，不要自行修改 -->

<link rel="stylesheet" href="//at.alicdn.com/t/font_1749284_ba1fz6golrf.css">



<link rel="stylesheet" href="//at.alicdn.com/t/font_1736178_kmeydafke9r.css">


<link  rel="stylesheet" href="/hexo/css/main.css" />

<!-- 自定义样式保持在最底部 -->


  <script id="fluid-configs">
    var Fluid = window.Fluid || {};
    var CONFIG = {"hostname":"aieson.gitee.io","root":"/hexo/","version":"1.8.5","typing":{"enable":true,"typeSpeed":30,"cursorChar":"_","loop":false},"toc":{"enable":true,"headingSelector":"h1,h2,h3,h4,h5,h6","collapseDepth":0},"anchorjs":{"enable":true,"element":"h1,h2,h3,h4,h5,h6","placement":"right","visible":"hover","icon":"❡"},"copy_btn":true,"image_zoom":{"enable":true},"lazyload":{"enable":true,"onlypost":false},"web_analytics":{"enable":false,"baidu":null,"google":null,"gtag":null,"tencent":{"sid":null,"cid":null},"woyaola":null,"cnzz":null,"leancloud":{"app_id":null,"app_key":null,"server_url":null}}};
  </script>
  <script  src="/hexo/js/utils.js" ></script>
  <script  src="/hexo/js/color-schema.js" ></script>
<!-- hexo injector head_end start -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.css">

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hexo-math@4.0.0/dist/style.css">
<!-- hexo injector head_end end --><meta name="generator" content="Hexo 5.2.0"></head>


<body>
  <header style="height: 70vh;">
    <nav id="navbar" class="navbar fixed-top  navbar-expand-lg navbar-dark scrolling-navbar">
  <div class="container">
    <a class="navbar-brand"
       href="/hexo/">&nbsp;<strong>某垃圾高中生的个人笔记站</strong>&nbsp;</a>

    <button id="navbar-toggler-btn" class="navbar-toggler" type="button" data-toggle="collapse"
            data-target="#navbarSupportedContent"
            aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <div class="animated-icon"><span></span><span></span><span></span></div>
    </button>

    <!-- Collapsible content -->
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav ml-auto text-center">
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/hexo/">
                <i class="iconfont icon-home-fill"></i>
                首页
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/hexo/archives/">
                <i class="iconfont icon-archive-fill"></i>
                归档
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/hexo/categories/">
                <i class="iconfont icon-category-fill"></i>
                分类
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/hexo/tags/">
                <i class="iconfont icon-tags-fill"></i>
                标签
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/hexo/about/">
                <i class="iconfont icon-user-fill"></i>
                关于
              </a>
            </li>
          
        
        
          <li class="nav-item" id="search-btn">
            <a class="nav-link" data-toggle="modal" data-target="#modalSearch">&nbsp;<i
                class="iconfont icon-search"></i>&nbsp;</a>
          </li>
        
        
          <li class="nav-item" id="color-toggle-btn">
            <a class="nav-link" href="javascript:">&nbsp;<i
                class="iconfont icon-dark" id="color-toggle-icon"></i>&nbsp;</a>
          </li>
        
      </ul>
    </div>
  </div>
</nav>

    <div class="banner intro-2" id="background" parallax=true
         style="background: url('/hexo/img/default.png') no-repeat center center;
           background-size: cover;">
      <div class="full-bg-img">
        <div class="mask flex-center" style="background-color: rgba(0, 0, 0, 0.3)">
          <div class="page-header text-center fade-in-up">
            <span class="h2" id="subtitle" title="MathTest">
              
            </span>

            
              <div class="mt-3">
  
    <span class="post-meta mr-2">
      <i class="iconfont icon-author" aria-hidden="true"></i>
      AiEson
    </span>
  
  
    <span class="post-meta">
      <i class="iconfont icon-date-fill" aria-hidden="true"></i>
      <time datetime="2020-10-19 01:36" pubdate>
        2020年10月19日 凌晨
      </time>
    </span>
  
</div>

<div class="mt-1">
  
    
    <span class="post-meta mr-2">
      <i class="iconfont icon-chart"></i>
      0 字
    </span>
  

  
    
    <span class="post-meta mr-2">
      <i class="iconfont icon-clock-fill"></i>
      
      
      1
       分钟
    </span>
  

  
  
</div>

            
          </div>

          
        </div>
      </div>
    </div>
  </header>

  <main>
    
      

<div class="container-fluid">
  <div class="row">
    <div class="d-none d-lg-block col-lg-2"></div>
    <div class="col-lg-8 nopadding-md">
      <div class="container nopadding-md" id="board-ctn">
        <div class="py-5" id="board">
          <article class="post-content mx-auto">
            <!-- SEO header -->
            <h1 style="display: none">MathTest</h1>
            
            <div class="markdown-body">
              <mjx-container class="MathJax" jax="SVG" display="true" width="full" style="min-width: 34.034ex"><svg style="vertical-align: -17.37ex; min-width: 34.034ex" xmlns="http://www.w3.org/2000/svg" width="100%" height="35.871ex" role="img" focusable="false" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1-TEX-N-221A" d="M95 178Q89 178 81 186T72 200T103 230T169 280T207 309Q209 311 212 311H213Q219 311 227 294T281 177Q300 134 312 108L397 -77Q398 -77 501 136T707 565T814 786Q820 800 834 800Q841 800 846 794T853 782V776L620 293L385 -193Q381 -200 366 -200Q357 -200 354 -197Q352 -195 256 15L160 225L144 214Q129 202 113 190T95 178Z"></path><path id="MJX-1-TEX-N-33" d="M127 463Q100 463 85 480T69 524Q69 579 117 622T233 665Q268 665 277 664Q351 652 390 611T430 522Q430 470 396 421T302 350L299 348Q299 347 308 345T337 336T375 315Q457 262 457 175Q457 96 395 37T238 -22Q158 -22 100 21T42 130Q42 158 60 175T105 193Q133 193 151 175T169 130Q169 119 166 110T159 94T148 82T136 74T126 70T118 67L114 66Q165 21 238 21Q293 21 321 74Q338 107 338 175V195Q338 290 274 322Q259 328 213 329L171 330L168 332Q166 335 166 348Q166 366 174 366Q202 366 232 371Q266 376 294 413T322 525V533Q322 590 287 612Q265 626 240 626Q208 626 181 615T143 592T132 580H135Q138 579 143 578T153 573T165 566T175 555T183 540T186 520Q186 498 172 481T127 463Z"></path><path id="MJX-1-TEX-N-37" d="M55 458Q56 460 72 567L88 674Q88 676 108 676H128V672Q128 662 143 655T195 646T364 644H485V605L417 512Q408 500 387 472T360 435T339 403T319 367T305 330T292 284T284 230T278 162T275 80Q275 66 275 52T274 28V19Q270 2 255 -10T221 -22Q210 -22 200 -19T179 0T168 40Q168 198 265 368Q285 400 349 489L395 552H302Q128 552 119 546Q113 543 108 522T98 479L95 458V455H55V458Z"></path><path id="MJX-1-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 153Z"></path><path id="MJX-1-TEX-S4-221A" d="M983 1739Q988 1750 1001 1750Q1008 1750 1013 1745T1020 1733Q1020 1726 742 244T460 -1241Q458 -1250 439 -1250H436Q424 -1250 424 -1248L410 -1166Q395 -1083 367 -920T312 -601L201 44L137 -83L111 -57L187 96L264 247Q265 246 369 -357Q470 -958 473 -963L727 384Q979 1729 983 1739Z"></path><path id="MJX-1-TEX-N-32" d="M109 429Q82 429 66 447T50 491Q50 562 103 614T235 666Q326 666 387 610T449 465Q449 422 429 383T381 315T301 241Q265 210 201 149L142 93L218 92Q375 92 385 97Q392 99 409 186V189H449V186Q448 183 436 95T421 3V0H50V19V31Q50 38 56 46T86 81Q115 113 136 137Q145 147 170 174T204 211T233 244T261 278T284 308T305 340T320 369T333 401T340 431T343 464Q343 527 309 573T212 619Q179 619 154 602T119 569T109 550Q109 549 114 549Q132 549 151 535T170 489Q170 464 154 447T109 429Z"></path><path id="MJX-1-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-1-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-1-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-1-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path><path id="MJX-1-TEX-N-22C5" d="M78 250Q78 274 95 292T138 310Q162 310 180 294T199 251Q199 226 182 208T139 190T96 207T78 250Z"></path><path id="MJX-1-TEX-N-34" d="M462 0Q444 3 333 3Q217 3 199 0H190V46H221Q241 46 248 46T265 48T279 53T286 61Q287 63 287 115V165H28V211L179 442Q332 674 334 675Q336 677 355 677H373L379 671V211H471V165H379V114Q379 73 379 66T385 54Q393 47 442 46H471V0H462ZM293 211V545L74 212L183 211H293Z"></path><path id="MJX-1-TEX-N-2248" d="M55 319Q55 360 72 393T114 444T163 472T205 482Q207 482 213 482T223 483Q262 483 296 468T393 413L443 381Q502 346 553 346Q609 346 649 375T694 454Q694 465 698 474T708 483Q722 483 722 452Q722 386 675 338T555 289Q514 289 468 310T388 357T308 404T224 426Q164 426 125 393T83 318Q81 289 69 289Q55 289 55 319ZM55 85Q55 126 72 159T114 210T163 238T205 248Q207 248 213 248T223 249Q262 249 296 234T393 179L443 147Q502 112 553 112Q609 112 649 141T694 220Q694 249 708 249T722 217Q722 153 675 104T555 55Q514 55 468 76T388 123T308 170T224 192Q164 192 125 159T83 84Q80 55 69 55Q55 55 55 85Z"></path><path id="MJX-1-TEX-S3-28" d="M701 -940Q701 -943 695 -949H664Q662 -947 636 -922T591 -879T537 -818T475 -737T412 -636T350 -511T295 -362T250 -186T221 17T209 251Q209 962 573 1361Q596 1386 616 1405T649 1437T664 1450H695Q701 1444 701 1441Q701 1436 681 1415T629 1356T557 1261T476 1118T400 927T340 675T308 359Q306 321 306 250Q306 -139 400 -430T690 -924Q701 -936 701 -940Z"></path><path id="MJX-1-TEX-S3-29" d="M34 1438Q34 1446 37 1448T50 1450H56H71Q73 1448 99 1423T144 1380T198 1319T260 1238T323 1137T385 1013T440 864T485 688T514 485T526 251Q526 134 519 53Q472 -519 162 -860Q139 -885 119 -904T86 -936T71 -949H56Q43 -949 39 -947T34 -937Q88 -883 140 -813Q428 -430 428 251Q428 453 402 628T338 922T245 1146T145 1309T46 1425Q44 1427 42 1429T39 1433T36 1436L34 1438Z"></path><path id="MJX-1-TEX-N-35" d="M164 157Q164 133 148 117T109 101H102Q148 22 224 22Q294 22 326 82Q345 115 345 210Q345 313 318 349Q292 382 260 382H254Q176 382 136 314Q132 307 129 306T114 304Q97 304 95 310Q93 314 93 485V614Q93 664 98 664Q100 666 102 666Q103 666 123 658T178 642T253 634Q324 634 389 662Q397 666 402 666Q410 666 410 648V635Q328 538 205 538Q174 538 149 544L139 546V374Q158 388 169 396T205 412T256 420Q337 420 393 355T449 201Q449 109 385 44T229 -22Q148 -22 99 32T50 154Q50 178 61 192T84 210T107 214Q132 214 148 197T164 157Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0) scale(0.0181) translate(0, -8177.5)"><g data-mml-node="math"><g data-mml-node="mtable" transform="translate(2078, 0) translate(-2078, 0)"><g transform="translate(0 8177.5) matrix(1 0 0 -1 0 0) scale(55.25)"><svg data-table="true" preserveAspectRatio="xMidYMid" viewBox="5443.5 -8177.5 1 15855"><g transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="mlabeledtr" transform="translate(0, 6139.3)"><g data-mml-node="mtd"><g data-mml-node="msqrt"><g transform="translate(853, 0)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-33"></use><use xlink:href="#MJX-1-TEX-N-37" transform="translate(500, 0)"></use></g></g><g data-mml-node="mo" transform="translate(0, 142.3)"><use xlink:href="#MJX-1-TEX-N-221A"></use></g><rect width="1000" height="60" x="853" y="882.3"></rect></g></g><g data-mml-node="mtd" transform="translate(1853, 0)"><g data-mml-node="mi"></g><g data-mml-node="mo" transform="translate(277.8, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="msqrt" transform="translate(1333.6, 0)"><g transform="translate(1020, 0)"><g data-mml-node="mfrac"><g data-mml-node="mrow" transform="translate(220, 676)"><g data-mml-node="msup"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="mo" transform="translate(1625.8, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(2626, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g><g data-mml-node="msup" transform="translate(1081.2, -824)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 393.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="3326" height="60" x="120" y="220"></rect></g></g><g data-mml-node="mo" transform="translate(0, 228.3)"><use xlink:href="#MJX-1-TEX-S4-221A"></use></g><rect width="3566" height="60" x="1020" y="1918.3"></rect></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, 2795.3)"><g data-mml-node="mtd" transform="translate(1853, 0)"></g><g data-mml-node="mtd" transform="translate(1853, 0)"><g data-mml-node="mi"></g><g data-mml-node="mo" transform="translate(277.8, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="msqrt" transform="translate(1333.6, 0)"><g transform="translate(1020, 0)"><g data-mml-node="mfrac"><g data-mml-node="msup" transform="translate(220, 676)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="msup" transform="translate(220, -824)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 393.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="1603.6" height="60" x="120" y="220"></rect></g><g data-mml-node="mo" transform="translate(2065.8, 0)"><use xlink:href="#MJX-1-TEX-N-22C5"></use></g><g data-mml-node="mfrac" transform="translate(2566, 0)"><g data-mml-node="mrow" transform="translate(220, 676)"><g data-mml-node="msup"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="mo" transform="translate(1625.8, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(2626, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g><g data-mml-node="msup" transform="translate(1081.2, -834)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="3326" height="60" x="120" y="220"></rect></g></g><g data-mml-node="mo" transform="translate(0, 212.3)"><use xlink:href="#MJX-1-TEX-S4-221A"></use></g><rect width="6132" height="60" x="1020" y="1902.3"></rect></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, -580.7)"><g data-mml-node="mtd" transform="translate(1853, 0)"></g><g data-mml-node="mtd" transform="translate(1853, 0)"><g data-mml-node="mi"></g><g data-mml-node="mo" transform="translate(277.8, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="msqrt" transform="translate(1333.6, 0)"><g transform="translate(1020, 0)"><g data-mml-node="mfrac"><g data-mml-node="msup" transform="translate(220, 676)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="msup" transform="translate(220, -824)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 393.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="1603.6" height="60" x="120" y="220"></rect></g></g><g data-mml-node="mo" transform="translate(0, 228.3)"><use xlink:href="#MJX-1-TEX-S4-221A"></use></g><rect width="1843.6" height="60" x="1020" y="1918.3"></rect></g><g data-mml-node="msqrt" transform="translate(4197.1, 0)"><g transform="translate(1020, 0)"><g data-mml-node="mfrac"><g data-mml-node="mrow" transform="translate(220, 676)"><g data-mml-node="msup"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="mo" transform="translate(1625.8, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(2626, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g><g data-mml-node="msup" transform="translate(1081.2, -834)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="3326" height="60" x="120" y="220"></rect></g></g><g data-mml-node="mo" transform="translate(0, 212.3)"><use xlink:href="#MJX-1-TEX-S4-221A"></use></g><rect width="3566" height="60" x="1020" y="1902.3"></rect></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, -3836.8)"><g data-mml-node="mtd" transform="translate(1853, 0)"></g><g data-mml-node="mtd" transform="translate(1853, 0)"><g data-mml-node="mi"></g><g data-mml-node="mo" transform="translate(277.8, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="mfrac" transform="translate(1333.6, 0)"><g data-mml-node="mn" transform="translate(220, 676)"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(220, -686)"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g><rect width="1200" height="60" x="120" y="220"></rect></g><g data-mml-node="msqrt" transform="translate(2773.6, 0)"><g transform="translate(1020, 0)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="mo" transform="translate(722.2, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mfrac" transform="translate(1722.4, 0)"><g data-mml-node="mn" transform="translate(671.8, 676)"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="msup" transform="translate(220, -834)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><rect width="1603.6" height="60" x="120" y="220"></rect></g></g><g data-mml-node="mo" transform="translate(0, 108.3)"><use xlink:href="#MJX-1-TEX-S4-221A"></use></g><rect width="3566" height="60" x="1020" y="1798.3"></rect></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, -6728)"><g data-mml-node="mtd" transform="translate(1853, 0)"></g><g data-mml-node="mtd" transform="translate(1853, 0)"><g data-mml-node="mi"></g><g data-mml-node="mo" transform="translate(277.8, 0)"><use xlink:href="#MJX-1-TEX-N-2248"></use></g><g data-mml-node="mfrac" transform="translate(1333.6, 0)"><g data-mml-node="mn" transform="translate(220, 676)"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(220, -686)"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g><rect width="1200" height="60" x="120" y="220"></rect></g><g data-mml-node="mrow" transform="translate(2773.6, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-S3-28"></use></g><g data-mml-node="mn" transform="translate(736, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="mo" transform="translate(1458.2, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mfrac" transform="translate(2458.4, 0)"><g data-mml-node="mn" transform="translate(1283, 676)"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="mrow" transform="translate(220, -834)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use></g><g data-mml-node="mo" transform="translate(722.2, 0)"><use xlink:href="#MJX-1-TEX-N-22C5"></use></g><g data-mml-node="msup" transform="translate(1222.4, 0)"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-37"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(500, 0)"></use></g><g data-mml-node="mn" transform="translate(1000, 403.1) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g></g><rect width="2826" height="60" x="120" y="220"></rect></g><g data-mml-node="mo" transform="translate(5524.4, 0)"><use xlink:href="#MJX-1-TEX-S3-29"></use></g></g></g></g></g></svg><svg data-labels="true" preserveAspectRatio="xMaxYMid" viewBox="1278 -8177.5 1 15855"><g data-labels="true" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="mtd" id="mjx-eqn-1" transform="translate(0, 6139.3)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-31" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-2" transform="translate(0, 2795.3)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-3" transform="translate(0, -580.7)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-4" transform="translate(0, -3836.8)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-34" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-5" transform="translate(0, -6728)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-35" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g></g></svg></g></g></g></g></svg></mjx-container>
<mjx-container class="MathJax" jax="SVG" display="true" width="full" style="min-width: 46.247ex"><svg style="vertical-align: -13.861ex; min-width: 46.247ex" xmlns="http://www.w3.org/2000/svg" width="100%" height="28.853ex" role="img" focusable="false" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-1-TEX-I-1D465" d="M52 289Q59 331 106 386T222 442Q257 442 286 424T329 379Q371 442 430 442Q467 442 494 420T522 361Q522 332 508 314T481 292T458 288Q439 288 427 299T415 328Q415 374 465 391Q454 404 425 404Q412 404 406 402Q368 386 350 336Q290 115 290 78Q290 50 306 38T341 26Q378 26 414 59T463 140Q466 150 469 151T485 153H489Q504 153 504 145Q504 144 502 134Q486 77 440 33T333 -11Q263 -11 227 52Q186 -10 133 -10H127Q78 -10 57 16T35 71Q35 103 54 123T99 143Q142 143 142 101Q142 81 130 66T107 46T94 41L91 40Q91 39 97 36T113 29T132 26Q168 26 194 71Q203 87 217 139T245 247T261 313Q266 340 266 352Q266 380 251 392T217 404Q177 404 142 372T93 290Q91 281 88 280T72 278H58Q52 284 52 289Z"></path><path id="MJX-1-TEX-N-32" d="M109 429Q82 429 66 447T50 491Q50 562 103 614T235 666Q326 666 387 610T449 465Q449 422 429 383T381 315T301 241Q265 210 201 149L142 93L218 92Q375 92 385 97Q392 99 409 186V189H449V186Q448 183 436 95T421 3V0H50V19V31Q50 38 56 46T86 81Q115 113 136 137Q145 147 170 174T204 211T233 244T261 278T284 308T305 340T320 369T333 401T340 431T343 464Q343 527 309 573T212 619Q179 619 154 602T119 569T109 550Q109 549 114 549Q132 549 151 535T170 489Q170 464 154 447T109 429Z"></path><path id="MJX-1-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-1-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-1-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path><path id="MJX-1-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-1-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 153Z"></path><path id="MJX-1-TEX-S4-23A1" d="M319 -645V1154H666V1070H403V-645H319Z"></path><path id="MJX-1-TEX-S4-23A3" d="M319 -644V1155H403V-560H666V-644H319Z"></path><path id="MJX-1-TEX-S4-23A2" d="M319 0V602H403V0H319Z"></path><path id="MJX-1-TEX-I-1D44E" d="M33 157Q33 258 109 349T280 441Q331 441 370 392Q386 422 416 422Q429 422 439 414T449 394Q449 381 412 234T374 68Q374 43 381 35T402 26Q411 27 422 35Q443 55 463 131Q469 151 473 152Q475 153 483 153H487Q506 153 506 144Q506 138 501 117T481 63T449 13Q436 0 417 -8Q409 -10 393 -10Q359 -10 336 5T306 36L300 51Q299 52 296 50Q294 48 292 46Q233 -10 172 -10Q117 -10 75 30T33 157ZM351 328Q351 334 346 350T323 385T277 405Q242 405 210 374T160 293Q131 214 119 129Q119 126 119 118T118 106Q118 61 136 44T179 26Q217 26 254 59T298 110Q300 114 325 217T351 328Z"></path><path id="MJX-1-TEX-N-2E" d="M78 60Q78 84 95 102T138 120Q162 120 180 104T199 61Q199 36 182 18T139 0T96 17T78 60Z"></path><path id="MJX-1-TEX-I-1D45B" d="M21 287Q22 293 24 303T36 341T56 388T89 425T135 442Q171 442 195 424T225 390T231 369Q231 367 232 367L243 378Q304 442 382 442Q436 442 469 415T503 336T465 179T427 52Q427 26 444 26Q450 26 453 27Q482 32 505 65T540 145Q542 153 560 153Q580 153 580 145Q580 144 576 130Q568 101 554 73T508 17T439 -10Q392 -10 371 17T350 73Q350 92 386 193T423 345Q423 404 379 404H374Q288 404 229 303L222 291L189 157Q156 26 151 16Q138 -11 108 -11Q95 -11 87 -5T76 7T74 17Q74 30 112 180T152 343Q153 348 153 366Q153 405 129 405Q91 405 66 305Q60 285 60 284Q58 278 41 278H27Q21 284 21 287Z"></path><path id="MJX-1-TEX-N-33" d="M127 463Q100 463 85 480T69 524Q69 579 117 622T233 665Q268 665 277 664Q351 652 390 611T430 522Q430 470 396 421T302 350L299 348Q299 347 308 345T337 336T375 315Q457 262 457 175Q457 96 395 37T238 -22Q158 -22 100 21T42 130Q42 158 60 175T105 193Q133 193 151 175T169 130Q169 119 166 110T159 94T148 82T136 74T126 70T118 67L114 66Q165 21 238 21Q293 21 321 74Q338 107 338 175V195Q338 290 274 322Q259 328 213 329L171 330L168 332Q166 335 166 348Q166 366 174 366Q202 366 232 371Q266 376 294 413T322 525V533Q322 590 287 612Q265 626 240 626Q208 626 181 615T143 592T132 580H135Q138 579 143 578T153 573T165 566T175 555T183 540T186 520Q186 498 172 481T127 463Z"></path><path id="MJX-1-TEX-N-22EE" d="M78 30Q78 54 95 72T138 90Q162 90 180 74T199 31Q199 6 182 -12T139 -30T96 -13T78 30ZM78 440Q78 464 95 482T138 500Q162 500 180 484T199 441Q199 416 182 398T139 380T96 397T78 440ZM78 840Q78 864 95 882T138 900Q162 900 180 884T199 841Q199 816 182 798T139 780T96 797T78 840Z"></path><path id="MJX-1-TEX-N-22F1" d="M133 760Q133 784 150 802T193 820Q217 820 235 804T254 761Q254 736 237 718T194 700T151 717T133 760ZM580 460Q580 484 597 502T640 520Q664 520 682 504T701 461Q701 436 684 418T641 400T598 417T580 460ZM1027 160Q1027 184 1044 202T1087 220Q1111 220 1129 204T1148 161Q1148 136 1131 118T1088 100T1045 117T1027 160Z"></path><path id="MJX-1-TEX-S4-23A4" d="M0 1070V1154H347V-645H263V1070H0Z"></path><path id="MJX-1-TEX-S4-23A6" d="M263 -560V1155H347V-644H0V-560H263Z"></path><path id="MJX-1-TEX-S4-23A5" d="M263 0V602H347V0H263Z"></path><path id="MJX-1-TEX-N-2C" d="M78 35T78 60T94 103T137 121Q165 121 187 96T210 8Q210 -27 201 -60T180 -117T154 -158T130 -185T117 -194Q113 -194 104 -185T95 -172Q95 -168 106 -156T131 -126T157 -76T173 -3V9L172 8Q170 7 167 6T161 3T152 1T140 0Q113 0 96 17Z"></path><path id="MJX-1-TEX-I-1D44F" d="M73 647Q73 657 77 670T89 683Q90 683 161 688T234 694Q246 694 246 685T212 542Q204 508 195 472T180 418L176 399Q176 396 182 402Q231 442 283 442Q345 442 383 396T422 280Q422 169 343 79T173 -11Q123 -11 82 27T40 150V159Q40 180 48 217T97 414Q147 611 147 623T109 637Q104 637 101 637H96Q86 637 83 637T76 640T73 647ZM336 325V331Q336 405 275 405Q258 405 240 397T207 376T181 352T163 330L157 322L136 236Q114 150 114 114Q114 66 138 42Q154 26 178 26Q211 26 245 58Q270 81 285 114T318 219Q336 291 336 325Z"></path><path id="MJX-1-TEX-I-1D443" d="M287 628Q287 635 230 637Q206 637 199 638T192 648Q192 649 194 659Q200 679 203 681T397 683Q587 682 600 680Q664 669 707 631T751 530Q751 453 685 389Q616 321 507 303Q500 302 402 301H307L277 182Q247 66 247 59Q247 55 248 54T255 50T272 48T305 46H336Q342 37 342 35Q342 19 335 5Q330 0 319 0Q316 0 282 1T182 2Q120 2 87 2T51 1Q33 1 33 11Q33 13 36 25Q40 41 44 43T67 46Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628ZM645 554Q645 567 643 575T634 597T609 619T560 635Q553 636 480 637Q463 637 445 637T416 636T404 636Q391 635 386 627Q384 621 367 550T332 412T314 344Q314 342 395 342H407H430Q542 342 590 392Q617 419 631 471T645 554Z"></path><path id="MJX-1-TEX-I-1D456" d="M184 600Q184 624 203 642T247 661Q265 661 277 649T290 619Q290 596 270 577T226 557Q211 557 198 567T184 600ZM21 287Q21 295 30 318T54 369T98 420T158 442Q197 442 223 419T250 357Q250 340 236 301T196 196T154 83Q149 61 149 51Q149 26 166 26Q175 26 185 29T208 43T235 78T260 137Q263 149 265 151T282 153Q302 153 302 143Q302 135 293 112T268 61T223 11T161 -11Q129 -11 102 10T74 74Q74 91 79 106T122 220Q160 321 166 341T173 380Q173 404 156 404H154Q124 404 99 371T61 287Q60 286 59 284T58 281T56 279T53 278T49 278T41 278H27Q21 284 21 287Z"></path><path id="MJX-1-TEX-N-2223" d="M139 -249H137Q125 -249 119 -235V251L120 737Q130 750 139 750Q152 750 159 735V-235Q151 -249 141 -249H139Z"></path><path id="MJX-1-TEX-I-1D435" d="M231 637Q204 637 199 638T194 649Q194 676 205 682Q206 683 335 683Q594 683 608 681Q671 671 713 636T756 544Q756 480 698 429T565 360L555 357Q619 348 660 311T702 219Q702 146 630 78T453 1Q446 0 242 0Q42 0 39 2Q35 5 35 10Q35 17 37 24Q42 43 47 45Q51 46 62 46H68Q95 46 128 49Q142 52 147 61Q150 65 219 339T288 628Q288 635 231 637ZM649 544Q649 574 634 600T585 634Q578 636 493 637Q473 637 451 637T416 636H403Q388 635 384 626Q382 622 352 506Q352 503 351 500L320 374H401Q482 374 494 376Q554 386 601 434T649 544ZM595 229Q595 273 572 302T512 336Q506 337 429 337Q311 337 310 336Q310 334 293 263T258 122L240 52Q240 48 252 48T333 46Q422 46 429 47Q491 54 543 105T595 229Z"></path><path id="MJX-1-TEX-SO-2211" d="M61 748Q64 750 489 750H913L954 640Q965 609 976 579T993 533T999 516H979L959 517Q936 579 886 621T777 682Q724 700 655 705T436 710H319Q183 710 183 709Q186 706 348 484T511 259Q517 250 513 244L490 216Q466 188 420 134T330 27L149 -187Q149 -188 362 -188Q388 -188 436 -188T506 -189Q679 -189 778 -162T936 -43Q946 -27 959 6H999L913 -249L489 -250Q65 -250 62 -248Q56 -246 56 -239Q56 -234 118 -161Q186 -81 245 -11L428 206Q428 207 242 462L57 717L56 728Q56 744 61 748Z"></path><path id="MJX-1-TEX-I-1D457" d="M297 596Q297 627 318 644T361 661Q378 661 389 651T403 623Q403 595 384 576T340 557Q322 557 310 567T297 596ZM288 376Q288 405 262 405Q240 405 220 393T185 362T161 325T144 293L137 279Q135 278 121 278H107Q101 284 101 286T105 299Q126 348 164 391T252 441Q253 441 260 441T272 442Q296 441 316 432Q341 418 354 401T367 348V332L318 133Q267 -67 264 -75Q246 -125 194 -164T75 -204Q25 -204 7 -183T-12 -137Q-12 -110 7 -91T53 -71Q70 -71 82 -81T95 -112Q95 -148 63 -167Q69 -168 77 -168Q111 -168 139 -140T182 -74L193 -32Q204 11 219 72T251 197T278 308T289 365Q289 372 288 376Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0) scale(0.0181) translate(0, -6626.6)"><g data-mml-node="math"><g data-mml-node="mtable" transform="translate(2078, 0) translate(-2078, 0)"><g transform="translate(0 6626.6) matrix(1 0 0 -1 0 0) scale(55.25)"><svg data-table="true" preserveAspectRatio="xMidYMid" viewBox="8142.6 -6626.6 1 12753.1"><g transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="mlabeledtr" transform="translate(0, 5284.6)"><g data-mml-node="mtd" transform="translate(13147.2, 0)"><g data-mml-node="mfrac"><g data-mml-node="mn" transform="translate(1319, 676)"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="mrow" transform="translate(220, -719.9)"><g data-mml-node="msup"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D465"></use></g><g data-mml-node="mn" transform="translate(572, 289) scale(0.707)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g><g data-mml-node="mo" transform="translate(1197.8, 0)"><use xlink:href="#MJX-1-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(2198, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g><rect width="2898" height="60" x="120" y="220"></rect></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, 247.6)"><g data-mml-node="mtd"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mo" transform="translate(1027.8, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="mrow" transform="translate(2083.6, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-S4-23A1" transform="translate(0, 2781)"></use><use xlink:href="#MJX-1-TEX-S4-23A3" transform="translate(0, -2791)"></use><svg width="667" height="3972" y="-1736" x="0" viewBox="0 993 667 3972"><use xlink:href="#MJX-1-TEX-S4-23A2" transform="scale(1, 9.897)"></use></svg></g><g data-mml-node="mtable" transform="translate(667, 0)"><g data-mml-node="mtr" transform="translate(0, 3185)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-31" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(2392.2, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(4771, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(444.7, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(889.3, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g></g><g data-mml-node="mtd" transform="translate(7031, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use></g><g data-mml-node="mi" transform="translate(500, 0)"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, 1785)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use><use xlink:href="#MJX-1-TEX-N-31" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(2392.2, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(4771, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(444.7, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(889.3, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g></g><g data-mml-node="mtd" transform="translate(7031, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use></g><g data-mml-node="mi" transform="translate(500, 0)"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, 385)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-33"></use><use xlink:href="#MJX-1-TEX-N-31" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(2392.2, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(500, 0)"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(4771, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(444.7, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(889.3, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g></g><g data-mml-node="mtd" transform="translate(7031, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-33"></use></g><g data-mml-node="mi" transform="translate(500, 0)"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, -1785)"><g data-mml-node="mtd" transform="translate(539.4, 0)"><g data-mml-node="TeXAtom" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-22EE"></use></g></g></g><g data-mml-node="mtd" transform="translate(2896.2, 0)"><g data-mml-node="TeXAtom" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-22EE"></use></g></g></g><g data-mml-node="mtd" transform="translate(4713.6, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-22F1"></use></g></g><g data-mml-node="mtd" transform="translate(7570.4, 0)"><g data-mml-node="TeXAtom" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-22EE"></use></g></g></g></g><g data-mml-node="mtr" transform="translate(0, -3185)"><g data-mml-node="mtd"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g><g data-mml-node="mn" transform="translate(600, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(2356.8, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g><g data-mml-node="mn" transform="translate(600, 0)"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g></g></g><g data-mml-node="mtd" transform="translate(4771, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(444.7, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g><g data-mml-node="mo" transform="translate(889.3, 0)"><use xlink:href="#MJX-1-TEX-N-2E"></use></g></g><g data-mml-node="mtd" transform="translate(6995.6, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44E"></use></g><g data-mml-node="TeXAtom" transform="translate(529, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g><g data-mml-node="mi" transform="translate(600, 0)"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g></g></g></g></g><g data-mml-node="mo" transform="translate(9090.2, 0)"><use xlink:href="#MJX-1-TEX-S4-23A4" transform="translate(0, 2781)"></use><use xlink:href="#MJX-1-TEX-S4-23A6" transform="translate(0, -2791)"></use><svg width="667" height="3972" y="-1736" x="0" viewBox="0 993 667 3972"><use xlink:href="#MJX-1-TEX-S4-23A5" transform="scale(1, 9.897)"></use></svg></g></g><g data-mml-node="mo" transform="translate(11840.7, 0)"><use xlink:href="#MJX-1-TEX-N-2C"></use></g><g data-mml-node="mi" transform="translate(12285.4, 0)"><use xlink:href="#MJX-1-TEX-I-1D44F"></use></g><g data-mml-node="mo" transform="translate(12992.2, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="mrow" transform="translate(14047.9, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-S4-23A1" transform="translate(0, 2671)"></use><use xlink:href="#MJX-1-TEX-S4-23A3" transform="translate(0, -2681)"></use><svg width="667" height="3752" y="-1626" x="0" viewBox="0 938 667 3752"><use xlink:href="#MJX-1-TEX-S4-23A2" transform="scale(1, 9.349)"></use></svg></g><g data-mml-node="mtable" transform="translate(667, 0)"><g data-mml-node="mtr" transform="translate(0, 3075)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44F"></use></g><g data-mml-node="TeXAtom" transform="translate(429, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, 1675)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44F"></use></g><g data-mml-node="TeXAtom" transform="translate(429, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-32"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, 275)"><g data-mml-node="mtd" transform="translate(35.4, 0)"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44F"></use></g><g data-mml-node="TeXAtom" transform="translate(429, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1-TEX-N-33"></use></g></g></g></g></g><g data-mml-node="mtr" transform="translate(0, -1675)"><g data-mml-node="mtd" transform="translate(312.6, 0)"><g data-mml-node="TeXAtom" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-N-22EE"></use></g></g></g></g><g data-mml-node="mtr" transform="translate(0, -3075)"><g data-mml-node="mtd"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D44F"></use></g><g data-mml-node="TeXAtom" transform="translate(429, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g></g></g></g></g><g data-mml-node="mo" transform="translate(1570.3, 0)"><use xlink:href="#MJX-1-TEX-S4-23A4" transform="translate(0, 2671)"></use><use xlink:href="#MJX-1-TEX-S4-23A6" transform="translate(0, -2681)"></use><svg width="667" height="3752" y="-1626" x="0" viewBox="0 938 667 3752"><use xlink:href="#MJX-1-TEX-S4-23A5" transform="scale(1, 9.349)"></use></svg></g></g></g></g><g data-mml-node="mlabeledtr" transform="translate(0, -4947.4)"><g data-mml-node="mtd" transform="translate(1045.3, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D443"></use></g><g data-mml-node="mo" transform="translate(751, 0)"><use xlink:href="#MJX-1-TEX-N-28"></use></g><g data-mml-node="msub" transform="translate(1140, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mi" transform="translate(750, -150) scale(0.707)"><use xlink:href="#MJX-1-TEX-I-1D456"></use></g></g><g data-mml-node="mo" transform="translate(2461.7, 0)"><use xlink:href="#MJX-1-TEX-N-2223"></use></g><g data-mml-node="mi" transform="translate(3017.5, 0)"><use xlink:href="#MJX-1-TEX-I-1D435"></use></g><g data-mml-node="mo" transform="translate(3776.5, 0)"><use xlink:href="#MJX-1-TEX-N-29"></use></g><g data-mml-node="mo" transform="translate(4443.3, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="mfrac" transform="translate(5499.1, 0)"><g data-mml-node="mrow" transform="translate(1648.2, 710)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D443"></use></g><g data-mml-node="mo" transform="translate(751, 0)"><use xlink:href="#MJX-1-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(1140, 0)"><use xlink:href="#MJX-1-TEX-I-1D435"></use></g><g data-mml-node="mo" transform="translate(2176.8, 0)"><use xlink:href="#MJX-1-TEX-N-2223"></use></g><g data-mml-node="mi" transform="translate(2732.6, 0)"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mo" transform="translate(3482.6, 0)"><use xlink:href="#MJX-1-TEX-N-29"></use></g><g data-mml-node="mi" transform="translate(3871.6, 0)"><use xlink:href="#MJX-1-TEX-I-1D443"></use></g><g data-mml-node="mo" transform="translate(4622.6, 0)"><use xlink:href="#MJX-1-TEX-N-28"></use></g><g data-mml-node="msub" transform="translate(5011.6, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mi" transform="translate(750, -150) scale(0.707)"><use xlink:href="#MJX-1-TEX-I-1D456"></use></g></g><g data-mml-node="mo" transform="translate(6055.5, 0)"><use xlink:href="#MJX-1-TEX-N-29"></use></g></g><g data-mml-node="mrow" transform="translate(220, -749.6)"><g data-mml-node="munderover"><g data-mml-node="mo"><use xlink:href="#MJX-1-TEX-SO-2211"></use></g><g data-mml-node="TeXAtom" transform="translate(1056, 477.1) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D45B"></use></g></g><g data-mml-node="TeXAtom" transform="translate(1056, -285.4) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D457"></use></g><g data-mml-node="mo" transform="translate(412, 0)"><use xlink:href="#MJX-1-TEX-N-3D"></use></g><g data-mml-node="mn" transform="translate(1190, 0)"><use xlink:href="#MJX-1-TEX-N-31"></use></g></g></g><g data-mml-node="mi" transform="translate(2467.7, 0)"><use xlink:href="#MJX-1-TEX-I-1D443"></use></g><g data-mml-node="mo" transform="translate(3218.7, 0)"><use xlink:href="#MJX-1-TEX-N-28"></use></g><g data-mml-node="msub" transform="translate(3607.7, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mi" transform="translate(750, -150) scale(0.707)"><use xlink:href="#MJX-1-TEX-I-1D457"></use></g></g><g data-mml-node="mo" transform="translate(4699, 0)"><use xlink:href="#MJX-1-TEX-N-29"></use></g><g data-mml-node="mi" transform="translate(5088, 0)"><use xlink:href="#MJX-1-TEX-I-1D443"></use></g><g data-mml-node="mo" transform="translate(5839, 0)"><use xlink:href="#MJX-1-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(6228, 0)"><use xlink:href="#MJX-1-TEX-I-1D435"></use></g><g data-mml-node="mo" transform="translate(7264.8, 0)"><use xlink:href="#MJX-1-TEX-N-2223"></use></g><g data-mml-node="msub" transform="translate(7820.6, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1-TEX-I-1D434"></use></g><g data-mml-node="mi" transform="translate(750, -150) scale(0.707)"><use xlink:href="#MJX-1-TEX-I-1D457"></use></g></g><g data-mml-node="mo" transform="translate(8911.9, 0)"><use xlink:href="#MJX-1-TEX-N-29"></use></g></g><rect width="9500.9" height="60" x="120" y="220"></rect></g></g></g></g></svg><svg data-labels="true" preserveAspectRatio="xMaxYMid" viewBox="1278 -6626.6 1 12753.1"><g data-labels="true" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="mtd" id="mjx-eqn-1" transform="translate(0, 5284.6)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-31" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-2" transform="translate(0, 247.6)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-32" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g><g data-mml-node="mtd" id="mjx-eqn-3" transform="translate(0, -4947.4)"><g data-mml-node="mtext"><use xlink:href="#MJX-1-TEX-N-28"></use><use xlink:href="#MJX-1-TEX-N-33" transform="translate(389, 0)"></use><use xlink:href="#MJX-1-TEX-N-29" transform="translate(889, 0)"></use></g></g></g></svg></g></g></g></g></svg></mjx-container>
            </div>
            <hr>
            <div>
              <div class="post-metas mb-3">
                
                
              </div>
              
                <p class="note note-warning">本博客所有文章除特别声明外，均采用 <a target="_blank" href="https://creativecommons.org/licenses/by-sa/4.0/deed.zh" rel="nofollow noopener noopener">CC BY-SA 4.0 协议</a> ，转载请注明出处！</p>
              
              
                <div class="post-prevnext row">
                  <article class="post-prev col-6">
                    
                    
                      <a href="/hexo/2020/11/13/%E6%B5%81%E6%B0%B4%E7%AC%94%E8%AE%B0/">
                        <i class="iconfont icon-arrowleft"></i>
                        <span class="hidden-mobile">流水笔记</span>
                        <span class="visible-mobile">上一篇</span>
                      </a>
                    
                  </article>
                  <article class="post-next col-6">
                    
                    
                  </article>
                </div>
              
            </div>

            
          </article>
        </div>
      </div>
    </div>
    
      <div class="d-none d-lg-block col-lg-2 toc-container" id="toc-ctn">
        <div id="toc">
  <p class="toc-header"><i class="iconfont icon-list"></i>&nbsp;目录</p>
  <div class="toc-body" id="toc-body"></div>
</div>

      </div>
    
  </div>
</div>

<!-- Custom -->


    

    
      <a id="scroll-top-button" href="#" role="button">
        <i class="iconfont icon-arrowup" aria-hidden="true"></i>
      </a>
    

    
      <div class="modal fade" id="modalSearch" tabindex="-1" role="dialog" aria-labelledby="ModalLabel"
     aria-hidden="true">
  <div class="modal-dialog modal-dialog-scrollable modal-lg" role="document">
    <div class="modal-content">
      <div class="modal-header text-center">
        <h4 class="modal-title w-100 font-weight-bold">搜索</h4>
        <button type="button" id="local-search-close" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body mx-3">
        <div class="md-form mb-5">
          <input type="text" id="local-search-input" class="form-control validate">
          <label data-error="x" data-success="v"
                 for="local-search-input">关键词</label>
        </div>
        <div class="list-group" id="local-search-result"></div>
      </div>
    </div>
  </div>
</div>
    

    
  </main>

  <footer class="text-center mt-5 py-3">
  <div class="footer-content">
     <a href="https://hexo.io" target="_blank" rel="nofollow noopener"><span>Hexo</span></a> <i class="iconfont icon-love"></i> <a href="https://github.com/fluid-dev/hexo-theme-fluid" target="_blank" rel="nofollow noopener"><span>Fluid</span></a> 
  </div>
  

  

  
</footer>

<!-- SCRIPTS -->

  <script  src="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.js" ></script>
  <link  rel="stylesheet" href="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.css" />

  <script>
    NProgress.configure({"showSpinner":false,"trickleSpeed":200})
    NProgress.start()
    document.addEventListener('DOMContentLoaded', function() {
      window.NProgress && window.NProgress.inc();
    })
    window.addEventListener('load', function() {
      NProgress.done();
    })
  </script>


<script  src="https://cdn.staticfile.org/jquery/3.4.1/jquery.min.js" ></script>
<script  src="https://cdn.staticfile.org/twitter-bootstrap/4.4.1/js/bootstrap.min.js" ></script>
<script  src="/hexo/js/debouncer.js" ></script>
<script  src="/hexo/js/events.js" ></script>
<script  src="/hexo/js/plugins.js" ></script>

<!-- Plugins -->


  
    <script  src="/hexo/js/lazyload.js" ></script>
  



  



  <script  src="https://cdn.staticfile.org/tocbot/4.11.1/tocbot.min.js" ></script>



  <script  src="https://cdn.staticfile.org/fancybox/3.5.7/jquery.fancybox.min.js" ></script>



  <script  src="https://cdn.staticfile.org/anchor-js/4.2.2/anchor.min.js" ></script>



  <script defer src="https://cdn.staticfile.org/clipboard.js/2.0.6/clipboard.min.js" ></script>





  <script  src="https://cdn.staticfile.org/typed.js/2.0.11/typed.min.js" ></script>
  <script>
    (function (window, document) {
      var typing = Fluid.plugins.typing;
      var title = document.getElementById('subtitle').title;
      
      typing(title)
      
    })(window, document);
  </script>



  <script  src="/hexo/js/local-search.js" ></script>
  <script>
    (function () {
      var path = "/hexo/local-search.xml";
      var inputArea = document.querySelector("#local-search-input");
      inputArea.onclick = function () {
        searchFunc(path, 'local-search-input', 'local-search-result');
        this.onclick = null
      }
    })()
  </script>





  

  
    <!-- MathJax -->
    <script>
      MathJax = {
        tex: {
          inlineMath: [['$', '$'], ['\\(', '\\)']]
        },
        options: {
          renderActions: {
            findScript: [10, doc => {
              document.querySelectorAll('script[type^="math/tex"]').forEach(node => {
                const display = !!node.type.match(/; *mode=display/);
                const math = new doc.options.MathItem(node.textContent, doc.inputJax[0], display);
                const text = document.createTextNode('');
                node.parentNode.replaceChild(text, node);
                math.start = { node: text, delim: '', n: 0 };
                math.end = { node: text, delim: '', n: 0 };
                doc.math.push(math);
              });
            }, '', false],
            insertedScript: [200, () => {
              document.querySelectorAll('mjx-container').forEach(node => {
                let target = node.parentNode;
                if (target.nodeName.toLowerCase() === 'li') {
                  target.parentNode.classList.add('has-jax');
                }
              });
            }, '', false]
          }
        }
      };
    </script>

    <script async src="https://cdn.staticfile.org/mathjax/3.0.5/es5/tex-svg.js" ></script>

  











<!-- 主题的启动项 保持在最底部 -->
<script  src="/hexo/js/boot.js" ></script>



</body>
</html>
